From 41af7ea069d49b94d844f3167ae3a6246cf47371 Mon Sep 17 00:00:00 2001
From: gromdimon <grom.dima.grom@gmail.com>
Date: Fri, 9 Feb 2024 16:27:19 +0100
Subject: [PATCH] tests

---
 src/components/GeneClinvarCard/lib.spec.ts | 72 ++++++++++++++++++++++
 1 file changed, 72 insertions(+)

diff --git a/src/components/GeneClinvarCard/lib.spec.ts b/src/components/GeneClinvarCard/lib.spec.ts
index e69de29..6e8968f 100644
--- a/src/components/GeneClinvarCard/lib.spec.ts
+++ b/src/components/GeneClinvarCard/lib.spec.ts
@@ -0,0 +1,72 @@
+import { describe, expect, it } from 'vitest'
+
+import { PlotlyDataPoint, downsample } from './lib'
+
+// Helper function to generate mock data
+const generateMockData = (count: number, start: number = 0): PlotlyDataPoint[] => {
+  return Array.from({ length: count }, (_, i) => ({
+    x: start + i,
+    y: Math.floor(Math.random() * 5) - 2 // Generate random y values between -2 and 2
+  }))
+}
+
+describe.concurrent('downsample function', () => {
+  it('should return identical data when under the threshold for downsampling', () => {
+    // arrange
+    const mockData = generateMockData(100) // Generate 100 data points
+    const windowSize = 10
+    const start = 0
+    const end = 99
+
+    // act
+    const result = downsample(mockData, windowSize, start, end)
+
+    // assert
+    expect(result.length).toBe(100) // Expect no downsampling
+    expect(result[0].count).toBe(1) // Each data point should have a count of 1
+  })
+
+  it('should downsample data correctly when above the threshold', () => {
+    // arrange
+    const mockData = generateMockData(801, 0) // Generate 800 data points
+    const windowSize = 40 // Large window size to ensure noticeable downsampling
+    const start = 0
+    const end = 799
+
+    // act
+    const result = downsample(mockData, windowSize, start, end)
+
+    // assert
+    expect(result.length).toBeLessThan(800) // Expect downsampling to reduce data points
+    expect(result.every((bin) => bin.count > 0)).toBe(true) // Every bin should have at least one data point
+  })
+
+  it('should filter out data points outside of the specified start and end range', () => {
+    // arrange
+    const mockData = generateMockData(1000, 0)
+    const windowSize = 100
+    const start = 200
+    const end = 299
+
+    // act
+    const result = downsample(mockData, windowSize, start, end)
+
+    // assert
+    expect(result.length).toBeLessThan(101)
+    expect(result.every((bin) => bin.x >= start && bin.x <= end)).toBe(true) // All bins should be within the range
+  })
+
+  it('should handle empty data gracefully', () => {
+    // arrange
+    const mockData: PlotlyDataPoint[] = []
+    const windowSize = 10
+    const start = 0
+    const end = 10
+
+    // act
+    const result = downsample(mockData, windowSize, start, end)
+
+    // assert
+    expect(result).toEqual([])
+  })
+})